CCC1=C(C)C2=CC3=C(C=C)C(C)=C4C=C5C(C)C(CCC(=O)OCC=C(C)CCCC(C)CCC=C(C)CCC=C(C)C)C6=[N+]5[Mg--]5(N34)N3C(=CC1=[N+]25)C(C)=C1C(=O)[C-](C(=O)OC)C6=C31